Preparation and characteristics of porous CuS microspheres consisted of polycrystalline nanoslices

Controlled synthesis of hierarchical CuS architectures by a recrystallization growth process in a microemulsion system

“…The absorption spectrums of the hierarchical CuS nanostructures and micro-sized flowerlike CuS show an increased absorption in the near-IR region, which is the characteristic band for covellite CuS [39]. Similar spectral feature has also been observed previously for CuS nanoplate-based architectures [40][41][42] prepared through different reaction routes. Compared with the absorption spectrum of the hierarchical CuS nanostructures and bulk CuS powders that of micro-sized flowerlike CuS was blue-shifted, which could be attributed to the strong quantum confinement of the excitonic transition for flowerlike structures.…”

The effect of complexing agent on crystal growth, structure and properties of nanostructured Cu2−xS thin films

“…Since the discovery of CdS/Cu 2 S heterojunction solar cells in 11 1954 [1], Cu 2Àx S have been the focus of intense interests as an 12 important semiconductor in photovoltaic cells. Cu 2Àx S as materi- 13 als, particularly in its thin film form, maintain transmittance in the 14 infrared, low reflectance (<10%) in the visible, and relatively high 15 reflectance (> 15%) in the near-infrared region, which are ideal 16 characteristics for solar energy adsorption [2].…”

“…The compositional controlling of copper sulfide 27 nanocrystals is an important way to tune the optoelectrical 28 properties of Cu 2Àx S-based materials [6]. So far, Cu x S nanomaterials 29 with different structures like nanorods, flakes, disks, spheres, wires, 30 platelets, tubules, nanoribbons, flower-like structures, and urchin-31 like structures have been successfully synthesized to investigate 32 their properties and to expand their applications [7][8][9][10][11][12][13]. Chen and 33 his colleagues synthesized uniform CuS nanotubes (NTs) with a 34 diameter of 220 nm with photocatalytic activity under visible light 35 [4].…”

Investigation of Organic Materials From the ‘Royal’ Burials of Xiongnu (Noin‐Ula, Mongolia) by Srxrf and XAFS Methods

“…Since the 1970s, several authors have attempted to elucidate the long-term corrosion mechanisms for artefacts made of bronze or copper alloys (Deschamps et al 2003). There are some main mineral species of copper that can form in these cases (Quaranta and Sandu 2008): nantokite CuCl, disposed below a layer of cuprite Cu 2 O (Pourbaix 1966;Bernard and Joiret Materials from the 'royal' burials of Xiongnu (Noin-Ula, Mongolia) 2009); copper (II) oxide CuO (Fu et al 2012); covellite CuS (when there is excess sulphide in the medium) (Quaranta and Sandu 2008;Jin et al 2010;Xu et al 2010), malachite Cu 2 (CO 3 )(OH) 2 (Pourbaix 1966;McCann et al 1999;Quaranta and Sandu 2008), and atacamite Cu 2 Cl(OH) 3 (Pourbaix 1966;Quaranta and Sandu 2008). An increase in the pH leads to the formation of azurite Cu 3 (CO 3 ) 2 (OH) 2 (thermodynamically less stable than malachite) or malachite (Quaranta and Sandu 2008).…”

“…; Xu et al . ), malachite Cu 2 (CO 3 )(OH) 2 (Pourbaix ; McCann et al . ; Quaranta and Sandu ), and atacamite Cu 2 Cl(OH) 3 (Pourbaix ; Quaranta and Sandu ).…”